Apparatus for making glass.



No. 852,396. PATENTBD APR. 30, 1907.

R. S. PBASE.

APPARATUS FOR MAKING GLASS.

APPLICATION FILED 0012.19.1904.

s SHEETS-SHEET 1.

Q4 AT1-@RMV No. 852,396. l r PATENTBD ARR. su, 1907. R.s.PBAsB. APPARATUS FOR 'MAKING GLASS.

APPLICATION FILED 0OT.19.1904.

3 SHEETS-SHEET Z.

wrrNEssEsv nNvzN-mm @da @wl/1 JJ W @2/Mee ATTUHNY .N0.852,s96. PATBNTBD APR.30, 1907.

' R. s. PHASE.

APPARATUS POR MAKING GLASS.

APPLICATION FILED 00T.19,1904.

i I I. i g 1 I i f 1 Il I WTNESSES: INVENTDR wf l JPeaO' n .9 1"""1 M AT1-@nuev UNITE STATES PATENT FFQilOLl..

ROGER s. PEASE, OF ALLEGHENY, PENNSYLVANIA. APPARATUS Fone/lamme, stese.

Specification of Letters Patent.

Patented April 30, 1907.

Appleman nea cette 19, 1901i. serie No. 229.085.

' To alt whom t may concern:

Be it known that, ROGER S. Pease, a citizen of the United States, residing at Alle gheny, in the county'of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Apparatus for Making Glass, of which the following is a specification.

My invention relates to apparatus for drawing sheets or cylinders of glass from a molten bath, and its olect is to provide/a novel pot in-which the glass is poured and kept hot durin the drawing operation, and

.which is provi ed-with a heating means .to

keep the glass hot during the operation, and also to reheat. after the drawing operation the portion thereof from which the glass has been drawn.

My invention relates also to the .combination of the pot and means whereby the glass is drawn therefrom.

Referring to the drawings which form a part of this specificationJ Figure 1 is a vertical section of my invention taken transversely through the pot and showinga cylinder in the process of being drawn; Fig. 2 is a vertical central section of one form of a bait which I prefer torernploy; Fig. 3 is an underplan view of the same Fig. 4 is a vertical section showing a modified form of bait and pot Fig. 5 is an enlarged vertical section of the bait shown in `Fig-4; Fig. 6 is a fragmentary view showing how my invention may be used to make wire-glass; Fig. is a vertical section of a drawing tool with its lower end plain or unbroken in outline. Fig. 8 is a vertical section similar to Fig. 1 showing the pot rotated So'as to reheat the trough portion thereof and Fig. 9 is a plan of the complete pot shown in Fig. 6.

Referring now to Fig. 1, 1 .represents a cy- .lindrical pot mounted axially on the car 2.

3 represents agas burnerisituated at the upper part of the interior of the pot by which the glass is melted during' the drawing operation and the trough portion of the pot ree heated after the drawing operation. Connected to one side of the pot is the trough 4 having the outer lip 5 and the inner lip 6 between which lies the surface of the glass from which the drawing is made. The upper surface of these lips lies slightly 4above the upper wall or lip of the passage 7 which conveys the melted glass from the cylindrical portion of the pot into the trough. The

glass should be of a sufficient depth in the trough to keep the drawing surface at the proper temperature. 8 represente a chir.;I ney having a lateral iiue 9 extending over the pot. The lower end of this .flue 9 is open and is adapted to register with the mouth of the trough Li when the pot is rotated into the position shown by the dott-ed lines, in which position the passage 7 and the trough furnish a path for the escape of the produc-ts of conrbustion from the burner 3, the burner servL ing at the saine time to reheat the trough and melt out any glass adhering thereto. The iue 9 is provided with a branch ilue 10,. which registers with the passage' 11 in the upper side of the pot il in its normal or drawe ing position. During the drawing operation the products of colnbustion'froni the burner 3 escape through the pass 11 and the flues 9 and 10 into the chimney S. 12 designates a stop-lug secured to the pot 1, the lug engaging with the lower side of the wall 13 when the pot has been rota position for di awnw glas shown Referring now to all the ngnres on Sheet 1 of the drawings: 14 designates the drawing 'tool or bait by which the glass is raised from the pot and made into cylindrical i'orin. The bait is provided with a central vertical tube 15 which forms a portion thereof, and b' which the other portions are supported. ITo the tube 15 are secured the arms 16 provided on their under side with flanges 17 and 18 concentric with the tube. Sleeved npon these flanges 17 and 1S are the skirts 19 and 20 which are clamped between the flanges and the bands 21 and 22 by moans of the bolts 23. The lower ends of the tube 15 and the skirts 19 and 20 are in substantially the saine horizontal plane. The skirts are provided with notched lower edges in order'to present separated. points for the attachment of the glass. .Although l have shown the skirts notched, they .may he of any suitable construction which will present a' series of separated, points to the glass and l do not limit myself to the continuous band in the construction ol' the skirtsI as they may beA made wholly of separated parts serially arranged or of one or more parts presenting the required attaching points of the glass. I do not lilnit the word skirt to any usual use or idea of the term, but desire to include any endless series of points or separated surfaces for the attachment of the glassI whether these ted down into the i iti points or surfaces are wholly distinct or sepa-' rated from each other, or secured to or integralwith a common Support. The tube would preferably be composed of a composition whose coefficient of expansion is the same as that of the glass in order to prevent the "The bait is then raised and air blown in through the tube 15. At the beginning of this operation the blowing will form a small bubble as indicated by the dotted line 24. If it were now required to 'make a cylinder from this preliminary bubble, it is clear that the flass of which the bubble is composed must be stretched and therefore its wall thinned in forller to obtain the required diameter of the cylinder. Where the cylinder is of considerable diameter the shoulder where the cylinder --begins is necessarily very thin and in practi cally all cases the cylinder will be thinner at this point than` it is .desired to -have it. It is an impossibility to increase the thickness of the' cylinder wall after the cylinder proper has been started. My improved'bait overcomesthis objectionable thinning of the cylinder wall in the following manner After the preliminaryY bubble 24 lhas been expanded so as to become materially thinned it comes in contact with the depending skirtcf glass 25 attached to the bait skirt 19, the original bubble wall and the skirt 25'merging into a reinforced skirt 26 becomes stretched and thinned and finally comes into contact with the skirt of glass 27 hanging to the skirt 20, the two skirts 26 and 27 .forming a new reinforced skirt 28 which l have shown to lbe the starting place f the cylinder proper. The tube 15 may be regarded-alsoas a skirt. I have shown the air admitted through the bait, but I do not limit myself to this construction since it is immaterial to the broad idea of my invention whether the air is introduced through the bait or through the glassin the ot after the manner well known in the art. 7Vlien the drawing has been completed'the cylinder'is cut off from any glass remaining in the pot and the pot rotated to the position shown in the d otted. lines iiifFig. 1. The burner 3 which has been keeping the glass hot during the drawing operation and sending its gasesthrough the passage 11 and the 'fines 9 and 10 now finds its exit through the passage 7 and the trough 4 into the flue,

9, whereby the glass sticking in the trou h is remelted and the trough reheated and t e cylindrical portion of the pot ke t hot ready for another su ly of glass. hen the pot has become'su ciently heated and pre ,ared for the reception of another supply of ie .rotated to the position shown 1n full 33a will 4This me-t iod of making wire lass maybe assit A es 1n ceases Fi 1 and recharged/withniolten'glass, an-

be raised and lowered'by7 the cord 30 and 5 the pulley 31, which are also used in theform of invention'shown lin Fig. 1, but any other approved form of raising and lowering means may be used. The rod 29 is shown solid but it may be-hollow as in Fig. 1 when used with the pot shown thereon.

In Fig. 4 the pot 1 has an opening 32 in its bottom beneath the space between'the lips 5 and 6. Inthis o en ing is the tube 33 which may be used to blow air or its equivalent into the interior of the cylinders as they are drawn, orwhichlmay, when. its upper end is adjusted so as to be below the surface of the glass, be employed to form a-preliminary bubble tobe seized by a clam or other drawing device or to be expande so'l as to mer ewith the glass skirt dependingfrom the Iiaitskirt 19a. If `the preliminary bubble be not formed, and the skirts do not have spaced points'the bait will be raised from the trough with two glass skirtsor bodies depen ing from it, and upon forcing air u through the tube 33 the inner glass skirt wi l be expanded till it merges4 with and lreinforces the outer glass skirt in a manner radily understood. The tube 33 may be raised and lowered', as occasion requires, by an f suitable means. It is evident that the bait shown in Figs. 4 and 5 could be used with the pot shown on Fig'. 1, if the saine were provided with a means of introducing air as y making the rod 29 hollow or by leading a tube through the skirts 19a and 20a.

Referrin now to Fig. 6, the pot is similar to that of lig. 4. In the former, the tube is employed asa guide for vthe wire trellis or fabric 34, stored in a roll 35er otherwise.

The glass covers they top of the tube 33,

and as the fabric is drawn upward the glass adheres to both sides of the same and forms a sheet ,of the center o the sheet'. The tube or guide revent the fabric from warping.

used/with continuous tanks, w ien the tube 33a would remain racticall stationary, or it may be'used .wit ots w ich have to be 1glass with the wire `'located at roo rio

rrr;

refilled, when theI tu es will be lowered in l any suitable manner so as to keep the top thereof below the surface of the glass'.l

As to Figs. 1, 2, and 4 it may be rem rked that the number of skirts isimmateria It 1.25 v

is clear that with the central one Aoinitte'dV the inner skirt 25 could be ex anded so as, to'meet the skirt 27, providedp` the skict'-19 had no teeth.

As to Fig. 4 itmay be said that the pot -inclosed pot havin bringing to the interior of the pot in eit shown therein j-'may be used with. various forms of drawing tools; whether with a limited to the drawing of cylinders, as sheets- ,or other forms may also be drawn from the Pct` 4 Ido not limit m self to the precisel details of construction an lpractice above described but ldesire to include within my invention all -modiiications which come within the scope thereof.

" Having described my invention, I claim -l 1.` In an apparatus for forming glass, an inclosed rotary pot, a burner for internally heating the rsame and a flue for conveying away the products of combustion the pot havmg communication with the flue, by separate orifices therein when the .pot is in both its normal and its rotated positions.

2.. In an apparatus for forming glass, an an extension with an Open top, a burner or internally heating the same, an off-take for removing the products of combustion, said o t havin vnormally connection with said o take, an means for the mouth 'of the extension into connectlon with the off-take whereby the extension may be yreheated.

3, In an apparatus for containing and delivering molten glass, the combination with a stationary flue, of a rotatable glass-containing pot having a lateral open-top extension varranged for drawing position or as circulation position with respect to said i ue respectively, and means for su plying fuel er position, substantially as set forth.

`4. In an' apparatus for forming glass, a

Arotatable pot having an inclosed portiondrawn, an

provided with a burner and another portion opening iiwardly whence glass may be a assage between such portions whereby the l? tion and reheat the same.

5. In an apparatus for forming glass, a rotatable pot, a metal fabric guide tube extending up through the bottom thereof, and means for drawing upwardly` the fabric and. attached glass.

6. In an apparatus for containing and delivering molten glass, the combination with a stationary flue, of a rotatable glasscontaining pot having a lateral open-top extensionl arranged for drawing position or gas circulation position with res ect to said ilue respectively, means for su )p ying fuel to the interior of the pot in eit er position, with means for positively arresting movement of the pot in its lowered position, substantially as set forth.

7. In an apparatus for containing and deurner may, upon rotation ofthe pot, melt out the glass in the second por livering molten glass, the combination with a stationary flue having two independent gas circulation inlet orifices, of a rotatable glass-containing pot provided with a gas outlet orifice arranged to communicatewith one of said flue orifices in drawing position, and a lateral drawing extension arranged to be located in drawing'position and to com municate with the other circulation orifice of the flue 'when the pot is tilted upwardly,

substantially as set forth.

Signed at Pittsburg, this 13th day of Oct., 1904. ROGER S. PEASE. Witnesses:

F. N. BARBER, A. M. `STEEN 

